Why we flood: Capricious climate complicates river regulation

By Ryan Tumilty, CBC News Ottawa, May 30, 2019

The Carillon dam is the Ottawa River's final drain.

Water from every one of the river's many tributaries and reservoirs — every drop from its vast watershed — eventually flows through the hydroelectric power station's gates, about 130 kilometres east of the capital.

On April 30, when the river reached this spring's peak, a record 9.2 million litres surged through the dam each second, enough to fill nearly four Olympic-size swimming pools. That's more water than cascades over Niagara Falls.


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